宽带LFM信号距离像补偿技术研究

在以去斜方法进行脉冲压缩来获得目标一维距离像的雷达系统中，由于存在多种系统误差，使得脉冲压缩后的压缩脉冲旁瓣升高，主瓣展宽，影响了一维像的质量，因此，要获得满意的距离像需要对这些误差进行补偿，而有些误差具有移变性，增加了补偿的难度。文中以实验系统为背景，基于对系统误差测量数据的分析研究，表明采用分段补偿的办法可以克服非线性移变特性的影响，满足系统指标要求。

A Study on Compensation of Range Image of Wideband LFM Signal

In the radar system that can obtain one dimensional range image of the target by using STRECTH pulse, compression, all kinds of system errors lead to the increase of the side lobe level and broadening of the main lobe, thus degrading the image. So it is necessary to compensate these errors. However,some errors change with the range of the targets,which increase. the compensation difficulties. This paper presents an approach to system error compensation, namely, subsection compensation, which can satisfy system specification and overcome the influence of nonlinear change. The processing of measured data with system errors demonstrates its effectiveness.